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<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>数组冒泡排序</title>
    <script>
        // 冒泡排序 
         var arr = [5,4,3,2,1  ]
         for (var i = 0; i <= arr.length - 1 ;i++) {
             for (var j = 0; j <= arr.length - i - 1;j++) {
                 if (arr[j] < arr[j + 1]) {
                     var temp = arr[j]
                     arr[j] = arr[j + 1]
                     arr[j + 1] = temp
                 }
             }
         }
         console.log(arr);
    </script>
</head>
<body>
    
</body>
</html>